听主屏幕的android触摸事件

问题描述：

大家好，

我正在开发一个应用程序，我想知道用户在Android手机的主屏幕上向下或向上滑动。基本上我想在用户在主屏幕上向上/向下滑动时执行一些操作。

我在网上搜索了很多但是没有找到答案是否可能或不。如果有可能，那么我可以从那里学习如何做到这一点。

预先感谢您的回复。*

Hello everyone,

I am developing an app in which I want to know when user swipe down or up on the home screen of the android mobile. Basically I want to perform some action whenever user swipe up/down on the home screen.

I search a lot on the web but found no answer whether it is possible or not. If it is possible then from where I can learn how to do this.

Thanks in advance for your kind reply.*

答

你需要覆盖 onTouchEvent（）：

You need to override onTouchEvent():

@Override
public void onTouchEvent(MotionEvent event) {

     switch(event.getAction())
     {
        case MotionEvent.ACTION_DOWN:
         //do your stuff
         break;
        case MotionEvent.ACTION_UP:
         //do your stuff
         break;
     }
}

听主屏幕的android触摸事件

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